JD Dunn is Henry's brother. He's a dark and brooding loner, with tattoos all over his body that speak more to his true nature than he ever lets on in conversation. Being the only brother of the groom should have made him a lock for best man, but JD's barely a guest at the wedding and wouldn't mind just missing it all together. His childish antics make Henry's life more difficult, and sometimes there's a malevolence in them that makes everyone wonder if JD has some secret endgame.